CN202381680U - Low-creep metal-enhanced rubber gasket - Google Patents
Low-creep metal-enhanced rubber gasket Download PDFInfo
- Publication number
- CN202381680U CN202381680U CN2011204985521U CN201120498552U CN202381680U CN 202381680 U CN202381680 U CN 202381680U CN 2011204985521 U CN2011204985521 U CN 2011204985521U CN 201120498552 U CN201120498552 U CN 201120498552U CN 202381680 U CN202381680 U CN 202381680U
- Authority
- CN
- China
- Prior art keywords
- nitrile butadiene
- rubber pad
- butadiene rubber
- rubber gasket
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Gasket Seals (AREA)
- Sealing Material Composition (AREA)
Abstract
The utility model relates to a sealing gasket for a flange, in particular relates to a low-creep metal-enhanced rubber gasket, and mainly aims to solve the technical problem that flexible graphite gaskets, PTFE (polytetrafluoroethylene) gaskets, common rubber gaskets and compressed non-asbestos fiber gaskets for existing flanges respectively have low strength, easiness in creep, poor sealability and the like. The rubber gasket comprises a nitrile butadiene rubber gasket (1) and is characterized in that metallic frameworks (2) are arranged inside the nitrile butadiene rubber gasket (1) and have wavy sections; and auxiliary O-shaped seal rings (3) are arranged on the inner rings of the nitrile butadiene rubber gasket (1).
Description
Technical field
The utility model relates to a kind of flange and uses gasket seal, especially relates to a kind of low creep metal Reinforced Rubber pad.
Background technique
Along with modern industry develops rapidly, also increasingly high to the seal request of all kinds of flange seal pads.Flange mainly comprises following classification with pad at present: Expanded graphite class pad, PTFE class pad, General Purpose Rubber pad, the no asbestos fiber pad of compression; But above-mentioned various material pad all has defective separately; Like flexible graphite gasket; Defectives such as though performances such as its heatproof degree are good, exist fragility big, and intensity is low; Though the PTFE pad have good corrosion resistance can, but have defective such as croop property difference; Though rubber sheet gasket has the good compression resilience, intensity is relatively poor, has limited the actual use of product; The no asbestos fiber pad of exploitation compression recent years; Its main purpose is to substitute asbestos washer; But because of it all adopts non-asbestos material to be made on traditional asbestos slate technology basis; On technology and material, do not break through, so its product performance index is lower, especially product temperature tolerance and leak-down rate index can not substitute asbestos packing sheet fully.
The model utility content
The utility model provides a kind of low creep metal Reinforced Rubber pad, and it mainly is to solve technical problems such as low, the easy creep of intensity that existing flange exists with Expanded graphite class pad, PTFE class pad, General Purpose Rubber pad, the no asbestos fiber pad of compression separately, poor sealing performance.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
The low creep metal Reinforced Rubber pad of the utility model comprises the nitrile butadiene rubber pad, and the inside of described nitrile butadiene rubber pad is provided with metal frame, and the section of metal frame is a waveform, and the inner ring of nitrile butadiene rubber pad is provided with auxiliary O RunddichtringO.The utility model adopts the particular structure form, guarantees the seal request of pad anti tear, anti-extrudability and low leakage.Though common nitrile butadiene rubber pad has good compression and resilience, tear easily under elevated pressures because its intensity is relatively poor, produce the problem of " run, drip, leak ", thereby its sealingly secure reliably can not get effective guarantee.To the above-mentioned defective of common nitrile butadiene rubber pad, designed with the waveform metal frame as reinforcing material in the product.Simultaneously the inner ring place designs one O RunddichtringO and improves the low seal request that leaks, and makes pad reach the double seal composite behaviour, guarantees the sealingly secure reliability that pad uses.
The utlity model has excellent compression and resilience.Common nitrile butadiene rubber pad is for guaranteeing its good resilience, and its sizing material hardness requirement is higher.And the low creep metal Reinforced Rubber pad through our architecture advances, as reinforcing material in the nitrile butadiene rubber pad, but the waveform metal frame is as reinforcing material in the nitrile butadiene rubber pad with the waveform metal frame; Cause the gasket surface glue-line to subtract the book compression performance than descending to some extent originally; In order to ensure the gasket compression performance index, satisfy low pretightening force requirement, through the nitrile butadiene rubber prescription is adjusted; Do not influencing reduction rubber covering hardness under the powerful prerequisite of rubber; Guaranteed that surface layer rubber has good amount of deformation under the low pretightening force of bolt, but the sizing material of low surface hardness can influence the product resilience, in order to solve the index of compression and these two contradictions of resilience; Be designed to waveform to the metal frame of interior enhancing; Improve the resilience of product, guarantee that product has excellent compression and resilience simultaneously, satisfies the seal request of every profession and trade to pad.
As preferably, the upper and lower surfaces of described nitrile butadiene rubber pad all is the cambered surface of evagination, thereby can fit with pipeline better.
As preferably, said corrugated metal frame outer surface is provided with phosphating coating and adhesive layer.Waveform metal frame surface is carried out phosphatization and is coated with the RM-1 adhesive treated; Carry out composite sulfuration through improving process parameters such as rubber and metal sulfide stress; Guarantee that product waveform metal frame after vulcanizing improves the anti tear and the extrusion performance of product with the rubber excellent adhesion performance.
Therefore; The utility model with the waveform metal frame as reinforcing material in the nitrile butadiene rubber pad; Through to metal frame surface special processing, make it together with the rubber excellent bonds, the inner ring place designs the metal Reinforced Rubber pad peculiar to vessel of one O RunddichtringO simultaneously; Making pad reach double seal makes up and guarantees the pad safety in utilization; Fluids such as oil, air, inert gas, water, hydrocarbon, middle intensity soda acid, aliphatic hydrocarbon be can be widely used in, equipment and devices such as industrial instrumentation, instrument, piping flange are matched in, simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Component, position and numbering among the figure: nitrile butadiene rubber pad 1, metal frame 2, auxiliary O RunddichtringO 3, cambered surface 4.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: the low creep metal Reinforced Rubber pad of this example, like Fig. 1, a nitrile butadiene rubber pad 1 is arranged, the upper and lower surfaces of nitrile butadiene rubber pad all is the cambered surface 4 of evagination.The inside of nitrile butadiene rubber pad is provided with metal frame 2, and the section of metal frame is a waveform, and the outer surface of metal frame is provided with phosphating coating and adhesive layer.The inner ring of nitrile butadiene rubber pad is provided with auxiliary O RunddichtringO 3.
The compressibility of the utility model:>=20 ﹪, rebound degree:>=30 ﹪, leak-down rate :≤1 * 10
-4Cm
3/ s.
The above is merely the specific embodiment of the utility model; But the structure characteristic of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (3)
1. one kind low creep metal Reinforced Rubber pad; Comprise nitrile butadiene rubber pad (1); The inside that it is characterized in that described nitrile butadiene rubber pad (1) is provided with metal frame (2), and the section of metal frame is a waveform, and the inner ring of nitrile butadiene rubber pad (1) is provided with auxiliary O RunddichtringO (3).
2. low creep metal Reinforced Rubber pad according to claim 1, the upper and lower surfaces that it is characterized in that described nitrile butadiene rubber pad (1) all is the cambered surface (4) of evagination.
3. low creep metal Reinforced Rubber pad according to claim 1 and 2 is characterized in that described corrugated metal frame (2) outer surface is provided with phosphating coating and adhesive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204985521U CN202381680U (en) | 2011-12-05 | 2011-12-05 | Low-creep metal-enhanced rubber gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204985521U CN202381680U (en) | 2011-12-05 | 2011-12-05 | Low-creep metal-enhanced rubber gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381680U true CN202381680U (en) | 2012-08-15 |
Family
ID=46630184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204985521U Expired - Lifetime CN202381680U (en) | 2011-12-05 | 2011-12-05 | Low-creep metal-enhanced rubber gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652683A (en) * | 2017-09-22 | 2018-02-02 | 慈溪市春潮密封件有限公司 | A kind of non-asbestos seal gasket |
-
2011
- 2011-12-05 CN CN2011204985521U patent/CN202381680U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652683A (en) * | 2017-09-22 | 2018-02-02 | 慈溪市春潮密封件有限公司 | A kind of non-asbestos seal gasket |
| CN107652683B (en) * | 2017-09-22 | 2020-09-25 | 慈溪市春潮密封件有限公司 | Non-asbestos sealing gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170214 Address after: 311255 Hangzhou Town, Xiaoshan District, Zhejiang, Pu Yang Town, Taoyuan Patentee after: Zhejiang Guotai Xiao Xing sealing material Limited by Share Ltd Address before: 311255 Zhejiang, Xiaoshan City, the town of Yang Yang Lake Village Patentee before: Guotai Seal Material Co., Ltd., Zhejiang Prov. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |
|
| CX01 | Expiry of patent term |